Page 127 of 263

Lighting125Exit lighting is switched off
immediately if the turn signal lever is pulled while the driver's door is open.
Activation, deactivation and duration
of this function can be changed in the
Info-Display. Vehicle personalisation
3 103.
The settings can be saved for the key being used 3 23.
Battery discharge protection Vehicle battery state of charge
function
The function guarantees longest
vehicle battery life via a generator with controllable power output and
optimised power distribution.
To prevent discharge of the vehicle
battery when driving, the following
systems are reduced automatically in
two stages and finally switched off:
● auxiliary heater
● heated rear window and mirrors ● heated seats
● fanIn the second stage, a message
which confirms activation of the
vehicle battery discharge protection
will be displayed in the Driver
Information Centre.
Switching off electric lights
To prevent discharge of the vehicle
battery when the ignition is switched off, some interior lights are switched
off automatically after some time.
Page 143 of 263

Driving and operating141Otherwise an Autostop will be
inhibited.
Certain settings of the climate control
system may inhibit an Autostop. See
'Climate control' chapter for more
details 3 129.
Immediately after motorway driving,
an Autostop may be inhibited.
New vehicle running-in 3 138.
Vehicle battery discharge protection
To ensure reliable engine restarts,
several battery discharge protection
features are implemented as part of
the stop-start system.
Power saving measures
During an Autostop, several electrical
features such as auxiliary electric
heater or rear window heating are
disabled or switched to a power
saving mode. The fan speed of the
climate control system is reduced to
save power.
Restart of the engine by the driver
Depress the clutch pedal to restart the
engine.The engine start is indicated by the
needle at the idle speed position in
the tachometer.
If the selector lever is shifted out of
neutral before depressing the clutch
first, control indicator - illuminates
or is shown as a symbol in the Driver Information Centre.
Control indicator - 3 91.
Restart of the engine by the stop- start system
The selector lever must be in neutral to enable an automatic restart.
If one of the following conditions
occurs during an Autostop, the
engine will be restarted automatically
by the stop-start system:
● The stop-start system is manually deactivated.
● The bonnet is opened.
● The driver's seat belt is unfastened and the driver's door
is opened.
● The engine temperature is too low.● The charging level of the vehiclebattery is below a defined level.
● The brake vacuum is not sufficient.
● The vehicle is driven at least at walking speed.
● The climate control system requests an engine start.
● The air conditioning is manually switched on.
If the bonnet is not fully closed, a
warning message is displayed in the
Driver Information Centre.
If an electrical accessory, e.g. a
portable CD player, is connected to
the power outlet, a brief power drop
during restart might be noticeable.
Parking9 Warning
● Do not park the vehicle on an
easily ignitable surface. The
high temperature of the
exhaust system could ignite the
surface.
Page 258 of 263

256IndexAAccessories and vehicle modifications .......................... 189
Active head restraints ...................48
Adaptive forward lighting ....94,
117, 198
AdBlue .................................. 93, 144
Adjustable air vents ...................134
Airbag, belt tensioners and roll bars ........................................... 90
Airbag deactivation ................63, 90
Airbag label................................... 59 Airbag system .............................. 59
Air conditioning regular operation ................................ 135
Air conditioning system .............. 127
Air intake .................................... 134
Air vents...................................... 134
Antilock brake system ................ 151
Antilock brake system (ABS) .......92
Anti-theft alarm system ................28
Anti-theft locking system .............. 28
Appearance care ........................230
Armrest ......................................... 55
Armrest storage ........................... 72
Ashtrays ....................................... 85
Automatic anti-dazzle ..................32
Automatic light control ...............114
Automatic locking ........................25
Automatic transmission .............147Autostop..................................... 139
Auxiliary heater ........................... 133
B Battery discharge protection ......125
Battery voltage ........................... 103 BlueInjection ............................... 144
Bonnet ....................................... 190
Brake and clutch fluid .................234
Brake and clutch system .............91
Brake assist ............................... 154
Brake fluid .................................. 194
Brakes ............................... 151, 193
Breakdown.................................. 228
Bulb replacement ....................... 196
C Capacities .................................. 246
Car Pass ...................................... 22
Catalytic converter .....................144
Central locking system ................23
Centre console storage ...............72
Changing tyre and wheel size ...216
Charging system .......................... 90
Child restraint installation locations ................................... 66
Child restraints.............................. 64
Child restraint systems ................64
Cigarette lighter ........................... 84
Climate control ............................. 16
Climate control systems .............126